handle-error.ts
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handle-error.ts
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	import SealiousError from "../response/errors.js";
	import type { Middleware } from "@koa/router";

	const error_code_map: { [type: string]: number } = {
	validation: 403,
	value_exists: 409,
	invalid_credentials: 401,
	not_found: 404,
	permission: 401,
	bad_subject: 404,
	bad_subject_action: 405,
	field_does_not_support_attachments: 405,
	};

	export default function handleError(): Middleware {
	return async function (ctx, next) {
	try {
	await next();
	} catch (error) {
	ctx.$app.Logger.error("HTTP ERR", "Responding with error", error);
	if (error instanceof SealiousError && error.is_user_fault) {
	ctx.status = error_code_map[error.type] \|\| 500;
	ctx.body = error.toObject();
	} else {
	ctx.status = 500;
	ctx.body = { message: "Server error" };
	console.error(error);
	}
	}
	};
	}